CONTENTS INTRODUCTION LAYOUT DIAGRAM FEATURES AND SPECS SETTING AND OPERATION 1. Transmitter Loading batteries Reading the LED battery indicators Recharging NiCad batteries Transmitter antenna Changing x-tals 2. Installation of Receiver and Servos Using separate power source for the receiver Battery Eliminator Circuitry (B.E.C.) with mechanical speed controls Connection with electronic speed control. 3. Transmitter, Receiver and Servo Settings Checking operation of the servo Steering Servo Settings Steering Rate Override switch (S.R.O.) Steering Rate Adjustment (S.R.A.) Steering servo trim setting Throttle Servo Settings Using mechanical speed control Using electronic speed control Using throttle servo for gas powered vehicles Setting End Point Adjustment (E.P.A.) 1
INTRODUCTION Thank you for purchasing the LYNX 2 Channel FM Radio System. The LYNX 2 FM Radio is made of high quality, technically advanced components designed to achieve top performance from you RC Vehicle. Team up with Hitec Racing and see that quality and performance doesn t have to cost a fortune! LAYOUT DIAGRAM Steering Servo Reverse Switch Throttle Servo Reverse Switch Antenna Power Switch Steering Wheel TX Crystal Holder Charging Jack Steering Rate Adjustment (S.R.A.) Steering Rate Override Switch (S.R.O.) LED Battery Indicator Steering Servo Trim Throttle Servo Trim Throttle Trigger Battery Cover 2
FEATURES AND SPECS Pistol Grip 2 Channel FM Proportional System Servo Reversing Switches (Both Channels) Steering Rate Adjustment. Thumb Controlled (40% - 100%) Adjustable Steering Rate Override button (40% - 100%) End Point adjustment (E.P.A.) Throttle and Brake 3 LED Battery Status Indicators Power Output: 500mW Current Drain: 180mA SETTINGS AND OPERATION 1. TRANSMITTER Loading batteries: You may us either NiCad batteries or Alkaline AA size batteries (NiCad recommended) Push the bottom battery cover in the direction of the arrow then lift up the cover. Load 8 AA batteries (be sure the polarity is correct). Reinstall battery case with installed AA batteries with connections to the top left. NiCads should be charge before use. Reading the LED Battery Indicators Full Power: Green Normal: Amber Warning: Flashing Red With new alkaline or freshly charged NiCads the Green light should be lit. With use the Green light will turn to Amber. If the Red light begins to flash, operation should be stopped and the batteries should be recharged or replaced immediately. Optional NiCad Battery Installation (part # 58207). 1. Plug the white battery plug into the receptacle in the bottom of the pistol grip handle. (Refer to Illustration) 2. Push the pack up into the battery bay. 3. Replace the cover. 4. Check the power level. 5. Charge if needed. (Refer to illustration below) Illustration: 3
Recharging NiCad Batteries The LYNX is equipped with an external charging jack so there is no need to remove the battery pack from the transmitter. The Hitec CG-22 or 25A are made to charge these types of batteries overnight or the approximately 12-15 hours. Please refer to the following diagram, check to see that the charge light lights up after the connection is complete. CG-22 or CG-25A #7201 Battery Holder #7401 RX NiCad Battery Transmitter Antenna You must attach the transmitter antenna by screwing it into the hole located at the top left/ center of the transmitter. You may take the antenna out to store it. This storage area is located on the backside of the transmitter. Always attach your antenna before use or you will experience sever shortage of operating range that could result in damage to your vehicle and or injuries to yourself and others. 4
Changing X-tals Changing the x-tal to void conflicts with other vehicles is possible where permitted. (You must check your local rules before doing so. For example, in the US, the FCC prohibits the changing of transmitter x-tals on 72 and 75MHz). If you are eligible to change the x-tals, both the transmitter and receiver x-tals must be changed together. You must change within the same band, i.e. 75MHz to 75MHz, 27MHz to 27MHz, different bands can not be intermixed if your radio is on 75MHz then 27MHz x-tals cannot be used. Use only Hitec x-tals when changing frequencies. Rx Crystal Tx Crystal 2. Installation of Receiver and Servos Using separate power source for the receiver When using a separate power pack for the receiver instead of sharing the main power source, please refer to the following diagram. After installation, turn on the power to the transmitter first then turn the receiver on. (Always turn the transmitter ON first and OFF last.) This will prevent the receiver from picking up stray signals and going out of control. Now, move the controls to see if the servos are moving properly. If not, Check your wiring, battery charge or x- tals if the servos do not move at all. Throttle Servo Steering Servo Battery Eliminator Circuitry (B.E.C.) Included in AM Model Only. 5
Connection with Electronic Speed Control ol Electronic Speed Controls such as the Hitec HFX have a built in B.E.C. system inside the speed control circuit. (Please verify whether your ESC has a built in B.E.C. circuit.) Plug the receiver connector from the speed control into the THROTTLE or #2 channel on the receiver, and the steering servo into the STEERING or #1 channel on the receiver. Now you can connect the main power to the speed control and when the power switch is turned on the speed control will regulate the power that the receivers can use. Motor Electronic Speed Control Steering Servo Main Power Pack 3.Transmitter ansmitter, Receiver er and Servo Settings Now we come to the critical part, as proper installation of these three main components is essential. Checking operation of the servo After the installing of the servo and receiver into your model, turn the transmitter power ON and fully extend the antenna, now turn on the receiver. (It is advisable to remove the pinion gear from your car so that the wheels do not engage for this test). Check to see if either servos or speed control are working properly. If not check the connections and make sure the main battery pack is charged. 6
Check to see if the servos are moving in the correct direction. If not, change the position of the servo-reversing switch located on the top of the transmitter to achieve the correct direction. If everything checks out then turn the receiver OFF first then the transmitter. (Always remember; never have the receiver ON without the transmitter also being ON ). War arning!!!: Do not shorten the length of the recei eceiver er antenna by cutting off f any excess wire. This will sever erel ely affect the operating rang ange and could result in injury to your ourself and others. No No Yes Steering Servo Settings -Steering Rate Over erride Switch (S.R.O.R.O.).) The most notable feature in the LYNX is the Steering Rate Override (SRO) Switch. This feature allows you to override the dual rate and use from 40% - 100% steering travel with one touch. Selectable via the screw adjustment on the face of the transmitter, this can be used in situations where your dual rates are set so the car does not Oversteer on the majority of the track but is set low to get around the hairpin. By pushing the SRO switch as you approach the hairpin turn, you will get the preprogram amount of throw immediately and be able to get around the turn faster. If you are stuck against the hose/board/wall/etc. and don t have enough steering throw to get you out, the SRO button on the LYNX can get you out when other radios can t. Experiment with this feature you will find it very beneficial. 7
- Steering Rate Adjustment (S.R.A.) Dual rates for the steering servo can adjusted via the thumbscrew on the pistol grip. This adjustment is critical for racers fine-tuning their cars handling On the Fly. The rate can be selected from 40% - 100%. If your car is loose or Oversteering, dial the adjustment back. If your car is pushing or Understeering, then dial the adjustment forward. This adjustment is a must for setting up your car to perform at its best. Adjust the servo so at 100% of travel (the dial will be all the way forward), the servo does not bind. If the servo binds, adjust the linkage to compensate. (Consult your vehicle s instruction manual for proper instructions on the linkage setup) A A: Normal B: Steering Rate Override Switch ON B Min. 40% Max. 100% 40% 100% - Steering Servo Trim Setting After verifying that the steering direction is correct, set the knob to the center. The servo horn or arm should be a 90 degrees and the wheels should be straight. If not then make the horn or arm 90 degrees by removing it and replacing it correctly. If the arm is at 90 degrees and the wheels are not straight, adjust the linkage to compensate. Once you have these two settings correct, use the steering trim for fine-tuning. Note: Always trim your car before you run or race. This is a common mistake made by beginners. If you have to steer your car to go straight, you are fighting a loosing battle. Make sure it tracks straight before you run it and driving will become much easier. 8
Fine Tuning Tilting Left A Tilting Right B Tilting Left Trimming Tilting Right Trimming A B Steering Trim Throttle Trim Steer Steer Thr hrottle Servo Settings Using Mechanical Speed Control ol A B C B A C Adjust the servo link rod so that point B will arrive at the neutral position. When the trigger is pulled to the maximum point, C should be as illustrated and at point A when the trigger is pushed to the limit. Check to see if the vehicle moves forward when the trigger is pulled. If the vehicle moves backwards the Throttle reversing switch will need to be switched. If the model moves forward or reverse at the neutral position, use the throttle servo trim to fine tune. If the servo moves the speed control farther than is needed use the EPA adjustments to limit the travel to the proper distance. - Using a Electronic Speed Control ol Set the throttle trim in the center then adjust the ESC neutral point. Use the trim for fine-tuning adjustments. Hint: Set a little drag brak ake in cars s that t are Understeer steering into the corner ners s and set no drag brak ake or a little cree eep for cars s that t over ersteer into the corner ners. This means the car will crawl wl forw orwar ard d when the throttle is in neutral, so you must ust push the trig igger er forw orwar ard d to kee eep p the car from om moving when stopped.. (This his can only y be done with forw orwar ard d only y ESCs). This his fea eatur ture e is used with 4-wheel drive e sedan cars s quite frequentl equently to allow w them to carry y more e speed into and through the corner ner. 9
* Set the throttle trim in the center Adjust Neutral Point Adjust the full power position of the ESC (forward only) when the trigger is pulled approximately 90% of the way. If the vehicle does not move forward when the trigger is pulled and does when the trigger is pushed, check the motor connection first. If that is correct then switch the throttle reversing switch to the opposite direction. Adjusting the full power position of the ESC (reversible version) is the same as the forward only, except you must make sure you are adjusting the forward not the reverse. If the trigger is pulled and the full power adjustment does not affect the speed but does when the trigger is pushed, the servo reversing switch for the throttle needs to be changed to the opposite direction. After this is determined, use the same 90% as discussed previously for forward. Reverse on most speed controls is not adjustable. Brake or Reverse Throttle Trigger 90% Neutral Position Adjust Full Power Position Full Forward - Using throttle servo for gas power ered ed vehic ehicle Gas powered vehicles require the throttle servo to be set up to operate the carburetor and brakes together. The EPAs are used in these cars to set the proper throw for the throttle and brakes. Setups are different for individual applications so consult the manufactures manual for the proper setup procedure. - Using throttle End Point Adjustments (E.P.A.).A.) Throttle (EPA) can be used in conjunction with electronic and mechanical speed controls as well as gas powered cars. Use the EPA to select the proper amount of travel for the throttle and brake. FCC INFORMATION TRANSMITTER FREQUENCIES CAN ONLY BE CHANGED BY AN AUTHORIZED HITEC RCD SERVICE CENTER. CHANGING FREQUENCIES BY THE CONSUMER WILL VOID THE WARRANTY AND IS A VIOLATION OF FCC REGULATIONS. 10
FM PISTOL TYPE 2 CHANNEL AM RADIO CONTROL SYSTEM